Added value of diffusion-weighted MR imaging to T2-weighted and dynamic contrast-enhanced MR imaging in T staging of gastric cancer

Clin Imaging. 2014 Mar-Apr;38(2):122-8. doi: 10.1016/j.clinimag.2013.12.001. Epub 2013 Dec 10.

Abstract

Objective: To assess the utilization of diffusion-weighted (DW) magnetic resonance (MR) imaging in T staging of gastric cancer prospectively.

Methods: Fifty-one patients underwent T2-weighted (T2W), contrast-enhanced (CE) and DW MR imaging. Two radiologists independently interpreted the images for T staging of the tumors.

Results: The overall accuracy of T staging in pT1-4 gastric cancers by T2W+CE+DW (88.2%) was significantly higher than that by T2W+CE and T2W+DW (both 76.5%, P=.031).

Conclusion: DW adds useful information to T2W and CE MR imaging in T staging of gastric cancer.

Keywords: Diffusion-weighted imaging; Magnetic resonance imaging; Staging; Stomach neoplasm.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Carcinoma / diagnosis*
  • Carcinoma / pathology
  • Contrast Media / chemistry*
  • Diffusion Magnetic Resonance Imaging*
  • Female
  • Humans
  • Image Processing, Computer-Assisted
  • Magnetic Resonance Imaging*
  • Male
  • Middle Aged
  • Neoplasm Staging / methods*
  • Prospective Studies
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Stomach Neoplasms / diagnosis*
  • Stomach Neoplasms / pathology

Substances

  • Contrast Media